---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-234922"
form_type: "8-K"
ticker: "MKTX"
cik: "0001278021"
company_name: "MARKETAXESS HOLDINGS INC"
filed_at: "2023-09-14T23:59:59+00:00"
generated_at: "2026-06-10T17:21:46.587059+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# MarketAxess elects Carlos Hernandez to Board of Directors effective Sept 13, 2023

## Summary
- Carlos Hernandez elected to MarketAxess Board, effective September 13, 2023; will serve on Finance Committee.
- Hernandez previously served as director from 2006 to 2019; deemed independent under NASDAQ rules.
- Recently retired from JPMorgan Chase; was Executive Chair of Investment and Corporate Banking and member of Operating Committee.
- Compensation will follow standard non-employee director plan as described in April 2023 proxy.
- No material transactions between Hernandez and company exceeding $120,000 in past year.

## SEC filing metadata
- accession: 0001193125-23-234922
- form_type: 8-K
- ticker: MKTX
- cik: 0001278021
- company_name: MARKETAXESS HOLDINGS INC
- filed_at: 2023-09-14T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1278021/000119312523234922/0001193125-23-234922-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1278021/000119312523234922/d551016d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-234922
- JSON: https://secwatch.observer/filing/0001193125-23-234922.json
- Plain text: https://secwatch.observer/filing/0001193125-23-234922.txt

## Key facts
- Executive change
  Carlos Hernandez was elected as Director at MARKETAXESS HOLDINGS INC.
  - Action: elected
  - Role: Director
  source text: On September 13, 2023, the Board of Directors (the “ Board ”) of MarketAxess Holdings Inc. (the “ Company ”) elected Carlos Hernandez to serve on the Company’s Board of Directors, effective September 13, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1278021/000119312523234922/0001193125-23-234922-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.